Improvement in automatic regulating-valves



' in the county fpartitiomP, that forms the that salsa strut dtifiiiraBIRDSILL'HOLLY, OF LOCKPOR T NEW YORK.

Letters Patent No. 94,748, dated Septmnber 14, 1869.

IMPROVEMENT IN AUTCMA'IIC REG-ULA'I'ING-VALVES.

. h The Schedule referred to in these Letters Patent-and making part ofthe same To all whom it may concern Be. it known that I, BIRDSILL HOLLY,ofLockport, of Niagara, and State of New York, have invented a n w andimproved- Automatic Regulating-Valve; and I do hereby declare that. thefo lowing is a full, clear, and exact description thereof, theaccompanying drawings,

reference being bad to making part of this specification, in which-Figure l is a vertical section, taken longitudinally,

through the centre of the improved regulating-valve,

open.

ing the valve shut. @Similar letters of reference indicate correspondingparts in both figures.

This invention relates to a new and improved automaticregulatingwal-ve', which is applicable to '-1:he house service-pipesleading from street water-mains, 'under the old system of supplyingcities with water from reservoirs, but which is more especiallyusefulfor such pipes, under my improved, system of water- 'works,described in my specification marked Case A, wherein this pressure ofwater in the street-main is required to be very great at certain-times.

The object of this invention is to prevent, at all times, an unduepressure 'oi-water in pipes leading into houses from street-mains, atthe same timeallow the pressure in the latter to be augmented to any (legree desired, by the employment of an automatic regulator, whichconsists of a movable diaphragm, a cutand thcleduction'water-way a. i pv G is a valve, which is adapted for closing the commu- "nicationbetween the water-ways a--a,-andwhich is guided byhaving its stemfitted'loosely into a top, D screwed into the'shell A, beneath thevalve-seat.

This valve Gjs arranged so as to close upwardly against a seat,which-surrounds a passage made through a the horizontal p'or'tion of thepartition P, and which is lined with leatherpb, confined in place by ascrewring 0. p 7

The leatherlining b aiiords a packing which will make a durable andperfectly tight joint, when the bevelled surface of valve G is heldup bypressure of water against a'diaphragm, J, as indicated in fig. 2. The,valve G has ears formed on its upper surface, between which is pivoted,at 'i, a screw-stem, g, the

threaded portion of which passes thro'ughla washer, e. A flexiblediaphragm, J, which presents a larger area Figure 2 is a similar view ofthe same parts, showor close .the' latter.

'o'r house-pipes, thereby allowing any desired induction water-way a,

of surface to thewater than valve G, is thus confined 7 between theportions 0 c so as not to leak around the screw-stern g, which connectsthe valve G to it.

The circumferential edge of diaphragm J is confined tightly between anannular flange or shoulder, 2, and auonlarged screw-threaded portion ofa cap,-l5,

so that water is not allowed to pass above the diaphra'gm into said cap.

The cap B contains a-helical spring, 0, and a follower 0, upon which ascrew, 0, bears, ,that is tapped through the toprof the'cap. The spring0 acts downwardly upon the nut a, with more or less pressure, as may bedesired,-which pressurehas atendency to keep valve G open, and can beincreased or diminished at pleasure, by adjusting the screw 0.

Operation.

Suppose the pressure in the street-mains to be fifty pounds, and thevalve G be adjusted, by means of screw c, t o close the valve G, and soattached to this valve, that any motion of the former has a tendency toopen Now, suppose the valve to-be arranged in its shell, so that thepressure of water, after it has passed through the valve-opening,willbe' between thevalve and diaphragm when the pressure in themains hasbeen raised to sixty pounds, this pressure, acting upwardly againstthediaphragm, will overcome'the power of the spring 0, and close thevalve, which will remain closed until the pressure against the diaphragmhaszbeen reduced; which will' occur at any time while water is beingdrawn in-the dwelling; and as soon as this flow is stopped, the pressurc against the diaphragm will at once close" the valve,

and not allow it to rise above 'sixtyponnds pressure.

By thus constructing and arranging a valve, it willremain closed, exceptwhen water. is-bcing drawn from the service-pipes to which it. isapplied, and cut oh" the pressure of water in the mains from the servicedegree of pressure to be applied to the water in the mains withoutendangering the service-pipes.

' Having describedone practical mode of carrying m'y-invention intoeflect,

What I claim as new, and desire to secure by Letters Patent, .is' 1. Theshell or case A, constructed with a diaphragm, P, and providedwithaspring-box, B, in coinbination with the flexible diaphragm J, avalve, G, and a connecting-stem, g, substantially as described.

2. The diaphragm J, and valve G, connected together by a stem, and jointi, substantially as and for the purposes described.

3. The adjusting-screw c, spring-,0, diaphragm J, partition P, and valveG, constructed and combined substantially as described.

j BIRDSILL HOLLY.

'Witn esses: O. G. HILDRETH, F. E. Roenns.

at a pressure of sixty pounds, the diaphragm .J being four or fivetimesthe areaof

